If a person has two different copies of the same gene, they are said to be ___________.

a) Homozygous
b) Heterozygous
c) Polygenetic
d) Haploid


Answer: b) Heterozygous

Biology & Microbiology

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Which structure is common to both gymnosperms and angiosperms?

A) stigma B) carpel C) ovule D) ovary E) anthers

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Independent assortment means that _____

A. monohybrid crosses will show segregation and independent assortment B. the segregation of one gene pair depends on the segregation of another gene pair C. the gametes produced must be heterozygous in all cases D. the segregation of one gene pair occurs as if no other gene pair was present E. the phenotypic ratio in F2 will be the same for dihybrid and monohybrid crosses

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Which of the following will cause a shift in the hemoglobin-oxygen dissociation curve to the right?

A) increase in temperature only B) increase in plasma pH only C) increase in 2,3-BPG (2,3-bisphosphoglycerate) only D) both an increase in temperature and an increase in 2,3-BPG E) both an increase in temperature and an increase in plasma pH

Biology & Microbiology

Gene conversion results from

A. discontinuous replication. B. photoreactivation. C. mismatch repair. D. SOS repair. E. excision repair.

Biology & Microbiology